30688480 has 24 divisors (see below), whose sum is σ = 72501912. Its totient is φ = 12275328.

The previous prime is 30688447. The next prime is 30688501. The reversal of 30688480 is 8488603.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95742 + ... + 96061.

It is an arithmetic number, because the mean of its divisors is an integer number (3020913).

Almost surely, 2^30688480 is an apocalyptic number.

It is an amenable number.

30688480 is an abundant number, since it is smaller than the sum of its proper divisors (41813432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30688480 is a wasteful number, since it uses less digits than its factorization.

30688480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191818 (or 191810 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 30688480 is about 5539.7184043957. The cubic root of 30688480 is about 313.0822595092.

The spelling of 30688480 in words is "thirty million, six hundred eighty-eight thousand, four hundred eighty".